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Complete Removable Prosth > Edentulous Anatomy > Flashcards

Edentulous Anatomy Flashcards

1
Q

___ mucosa is highly keratinized and is the best denture support

A

Masticatory mucosa

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2
Q

_____ mucosa is thin, non-keratinized mucosa of lips and cheek; forms seal against denture, but doesn’t resist stress

A

Lining mucosa

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3
Q

_____ mucosa is on dorsal surface of tongue; keratinized and contains taste buds

A

Specialized mucosa

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4
Q

What are the characteristics of the ideal denture-bearing tissue?

A
  1. Firmly bound, keratinized masticatory mucosa
  2. Zone of connective tissue and submucosa
  3. Underlying cortical bone
  4. Muscle attachments nearby (enhance resistance to bone resorption)
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5
Q

Routine resorption pattern following extraction of teeth results in a smaller maxilla when compared to dentate arch; smaller going side to side and up

A

Centripetal resorption

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6
Q

____ contains no muscle fibers, inserts in vertical direction, little lateral movement in function; notch in denture should be narrow

A

Labial frenum

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7
Q

_____ is a space between labial and buccal frena; reflection contains no muscle fibers

A

Labial vestibule

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8
Q

_____ has anterior-posterior direction of reflection, may contain few fibers of caninus muscle, notch in denture is broad since movement of frenum is affected by buccinator and orbicularis oris muscle

A

Buccal frenum

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9
Q

____ is between buccal frenum and hamular notch, space varies in size, space must be filled vertically and laterally by denture flange to prevent ingress of air and loss of retention of maxillary denture

A

Buccal vestibule

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10
Q

_____ is vestibular space posterior to zygoma; palpate zygomatic process in buccal vestibule just buccal to first maxillary molar; commonly incompletely captured in preliminary impressions

A

Retrozygomal Fossae

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11
Q

____ is an extension of the denture that goes beyond the teeth; rounded edge

A

Flange

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12
Q

_____ can be found by placing mirror head lateral to tuberosity, move mandible to opposite side, note binding or pain; this gives some indication of the width of the space for flange

A

Coronoid

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13
Q

What are the aspects of complete denture retention?

A 
Adhesion
Cohesion
Interfacial surface tension
Intimate tissue contact
Border seal - prevent ingress of air
Neuromuscular control by patient
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14
Q

____ narrow cleft between tuberosity and pterygoid hamulus; denture must extend into this area; posterior border of denture; soft displaceable tissue for comfort and retention

A

Hamular Notch

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15
Q

What tooth can come out of the tuberosity of the maxilla?

A

3rd molar

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16
Q

____ tissue is soft and displaceable and compressible

A

Glandular tissue

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17
Q

____ is on the soft palate and is the junction of movable and immovable tissues of the soft palate; not junction of hard and soft palate; imaginary line across the palate which marks the junction of the movable and the immovable portion of the soft palate

A

Vibrating line

18
Q

____ are unique to humans and are a coalescence of mucous glands on each side of midline; in the general area of the vibrating line

A

Fovea palatini

19
Q

____ is part of the hard palate that is a bony midline structure, no cushioning effect; may require relief when covered by a denture

A

Median Palatine Raphe

20
Q

_____ is a secondary denture support area; resists anterior displacement of denture

A

Rugae

21
Q

_____ is a landmark for the setting of anterior teeth; pad of connective tissue overlying nasopalatine canal opening; not tolerant of pressure from denture

A

Incisive papila

22
Q

Where is the primary support area of the maxilla?

A

Hard palate

23
Q

Where is the secondary support area of the maxilla?

A

Ridge

24
Q

_____ area is distal to junction of hard and soft palate; glandular and fibrous connective tissue which may be slightly compressed without harm; used for retention of maxillary complete denture

A

Posterior palatal seal

25
Q

Which House classification drapes the least and is the easiest to tolerate, broadest range and hardest to locate?

A

Class 1

26
Q

Which House classification drapes the most and is the hardest to tolerate, and easiest to locate?

A

Class 3

27
Q

_____ is area posterior to buccal frenum and is primary support area for complete dentures; denture base should cover these completely; between height of ridge and external oblique ridge; resorbs more slowly

A

Buccal shelf

28
Q

What is the primary support areas of the mandible?

A

Buccal shelf area and retromolar pads

29
Q

What is the secondary support area of the mandible?

A

Ridge

30
Q

Narrow ligamentous band extending from pterygoid hamulus to posterior part of mylohyoid line; superior constrictor muscle and buccinator muscle make it up; limits length of max and mandible complete dentures; connects from the hamulus to the mylohyoid ridge; when prominent can cause pain or loosening; requires relief groove if prominent

A

Pterygomandibular raphe

31
Q

____ is a triangular pad of soft tissue at posterior end of mandibular residual ridge; soft pad containing glandular tissue, creating from scarring after extractions; must be covered by denture base; excessive resorption of residual ridge occurs if pad not covered

A

Retromolar pad

32
Q

What are the contents of the retromolar pad?

A 
Loose submucosa
Glandular tissue
Fibers of buccinator and superior constrictors
Pterygomandibular raphe
Temporalis fibers
33
Q

____ is anterior attachment of tongue; overlies genioglossus muscle

A

Lingual frenum

34
Q

____ is the origin of the muscle that form floor of the mouth which influences length of lingual flange; can be prominent and/or sharp requiring relief

A

Mylohyoid ridge

35
Q

___ is space from lingual frenum to retromylohyoid curtain in posterior

A

Alveololingual sulcus

36
Q

____ is at distal end of the lingual sulcus; area posterior to the mylohyoid muscle; good seal aids in retention and stability; denture flange adapts laterally close to body of mandible producing typical S curve

A

Retromylohyoid space

37
Q

What 2 muscles form the retromylohyoid space?

A

Palatoglossus and superior constrictor muscle

38
Q

In resorption of maxilla, what direction does the resorption occur?

A

In and up

39
Q

In resorption of mandible, what direction does the resorption occur?

A

Down and out (wide)

40
Q

Is resorption more severe on maxilla or mandible?

A

Mandible

41
Q

Pressure on the ridge leads to _______ that leads to bone resorption

A

Blood supply interrupted

42
Q

Removing the dentures for at least 8 hours a day, taking proper impressions with tissues at rest, denture base extensions using max support area, and placing pressure in the correct places, doing clinical remount, and not allowing anterior teeth to contact help to do what?

A

Reduce pressure on residual ridge

Complete Removable Prosth (18 decks)

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